US3861173A - Apparatus for control of needle pushers - Google Patents

Apparatus for control of needle pushers Download PDF

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Publication number
US3861173A
US3861173A US301319A US30131972A US3861173A US 3861173 A US3861173 A US 3861173A US 301319 A US301319 A US 301319A US 30131972 A US30131972 A US 30131972A US 3861173 A US3861173 A US 3861173A
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Prior art keywords
needle
accordance
magnet
pushers
knitting
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US301319A
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English (en)
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Wolf-Dieter Kinkelin
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KINKELIN WOLF DIETER
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KINKELIN WOLF DIETER
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D04B15/78—Electrical devices

Definitions

  • the needle pushers in a knitting machine push the knitting tool to different vertical knitting positions, i.e. [52] U.S. Cl 66/50 R rest, tuck and knitting.
  • the needle pushers are mag- [51] Int. Cl D04b 15/78 netically pivoted in accordance with the knitting pat- [5 ] Field of Search 66/50 R, 50 B, 25, 75, tern by an arrangement of electromagnets and perma- 66/36 A, 36 B, 154 A; 335/277 nent magnets along a guide channel.
  • the needle pusher is held in the selected pivoted orientation by a [56] References Cited multichannel path divider which follows the magnet UNITED STATES PATENTS chamber along the guide channel.
  • the invention relates to an apparatus for the control of needle pushers for knitting tools of machines producing knitted fabrics, with grooves which are provided in the needle bed and in which both the knitting tools and the needle pushers are movable to and fro, and with a covering part which covers the grooves and which is also provided with the knitting tool cam and the needle pusher cam, and with pivot bearings for the needle pushers, and with a needle pusher foot which is provided on the needle pusher and which engages the needle pusher cam when the needle pusher has been pivoted into one position but not when it has been pivoted into the other, and with an electro-magnet mounted to the side of the lower magnetizable part of the needle pusher and acting on this latter and energizable in accordance with the patterns, and with a magnet situated underneath the said electro-magnet and generating a constant magnetic field and guiding the needle pusher over a certain traject.
  • the maximum selective frequency is comparatively low. Furthermore, an air gap is indispensable, as otherwise the pushers resting against the pole piece 16, if the electro-magnet 6 were not energized, would only slide along the pole piece surface 16 or pole piece surface 15 as a result of chance circumstances.
  • the holding force is unfortunately at its maximum in the narrowest part and decreases with the distance of the pusher from the said part. It would be more favourable if conditions were the exact converse.
  • the purpose of the invention is to indicate an apparatus which avoids all the above drawbacks and nevertheless provides a three-position selection system for the knitting tool, within only a moderate space, leaving the designer largely free to decide whether to make use of small inexpensive ferrite magnets or more expensive electro-magnets, if he wishes to produce a constant field.
  • the invention enables this object to be achieved as a result of the fact that the needle pusher can be moved into different positions in accordance with the three positions of the knitting tool, that it can be moved to two lateral different vertical levels by the needle pusher cam consisting of two parts, that a guide channel is provided for the lower portion of the needle pusher and is slightly wider than the said portion and takes a largely straight course and enters a magnet chamber widening in the direction of movement of the needle pusher, that immediately following the said entry and on both sides thereof the respective pole piece surfaces of a first and a second electro-magnet energizable in accordance with a pattern are provided, that these electro-magnets are followed by a third and fourth magnet respectively, that these magnets produce a constant magnetic field symmetrical to the central surface of the guide channel, that underneath the lower zone of the needle pusher a fifth magnet is provided which likewise produces a field symmetrical to the central surface of the guide channel, that the magnet chamber is followed by a three-channel path-divider of which the
  • FIG. 1 a radial section through a needle cylinder and the adjacent portions of a circular knitting machine.
  • FIG. 2 a section along the line 2--2 of FIG. 1.
  • FIG. 3 a section along the line 3-3 of FIG. 2.
  • FIG. 4 a section along the line 4-4 of FIG. 1, special attention being drawn to the fact that FIG. 4 is drawn on a scale 2:].
  • FIG. 5 a section along the line 5-5 of FIG. 4, with the needle pusher in a certain position.
  • FIG. 6 a section similar to that shown in FIG. 5, with the needle pusher in a second position.
  • FIG. 7 a section similar to that shown in FIG. 5, with the needle pusher in a third position.
  • FIG. 8 an enlarged lateral view of a another form of the pusher in the raised position.
  • FIG. 9 a schematic plan view of an alternative magnet arrangement.
  • a circular knitting machine has a needle cylinder 11 in the outer casing of which grooves 12 are cut in an axial direction and contain longitudinally displaeeable knitting needles 13. Among other things, a radial ring I4 inserted in a peripheral groove prevents the knitting needles 13 from falling out.
  • the needle cylinder II is driven by means not shown in the drawing.
  • a cam casing 16, integral with the frame, is provided, with earns 17 on the side opposite to the needle cylinder 11.
  • each cam has three channels 18, I9 and 21, corresponding to the positions tuck, knit and "rest.
  • Each knitting needle I3 is provided with a foot 22.
  • the needle either knits, tucks or remains at rest. lfthe knitting needle 13 is lifted up, it is a decisive factor, as may be seen from FIG. 2, at what moment it is lifted, as the channel 18 leads to a higher position than the channel 19.
  • each knitting needle 13 corresponds to each knitting needle 13.
  • the said pusher represents the control device for the knitting needles 13 and thus provides the control force by which the knitting needle 13 is lifted.
  • the needle pushers 23 can thus be far finer and lighter in weight than the knitting needles 13.
  • Each knitting pusher has a foot 24 at the top, which points in the same direction as the foot 22.
  • the cam casing 16 integral with the frame is provided with a knitting pusher cam 26, likewise integral with the frame. Needless to say, as many of these cams are provided within the circle of the cam casing 16 as required.
  • a needle pusher cam 26 surrounds, aligned in a suitable manner with the relevant cam 17, an upper contact surface 27 which comprises a horizontal zone 28, a zone 29 ascending at a slight angle, a horizontal zone 31 and a zone 32 descending at a considerable angle, as shown in FIG. 2.
  • the contact surface 27 represents the upper boundary for the feet 24.
  • Underneath two diamond-shaped lugs 37 and 36 are screwed to the cam casing 16 with screws 33 and 34. Their upper and lower boundary surfaces are in alignment and situated horizontally.
  • the upper boundary surfaces 38 form, in
  • the front side of the lug 36 forms a first lifting surface 39, proceeding obliquely upwards, for the foot 24, while the lug 37 is provided with a corresponding lifting surface 41.
  • the lug 37 is higher than the lug 36, so that the lifting surface 41 extends outwards to a greater distance than the lifting surface 39.
  • the pivot bearing used consists of the bent part 44 of the needle pusher 23, which part, as shown in FIG], may be bent outwards towards the right, U-shaped and pressed flat. From this zone onwards the entire needle pusher 23 is pressed flat and hardened and thus better adapted to the shape of the groove 12.
  • the bent part 44 rests on the upper edge of a supporting plate 46 which is screwed against the needle cylinder II from below and which partly closes the grooves 12 from below.
  • a ring 47 is also provided, which is shown in FIG. 8 and which constitutes an outer boundary and rotates together with the needle cylinder 11. As shown in particular in FIG.
  • the grooves 12 are thus sufficiently wide open at the bottom and the needle pushers 23 are nevertheless mounted sufficiently securely.
  • the construction of the hardened bent part 44 as shown in FIG. 8, in the form of an S, is to be preferred to that shown in FIG. 1, because if it is produced from circular material and the bent part 44 takes the form of an S-bend, this provides, after it has been pressed flat, a form which in the main portions is largely similar to the circle 48 shown in broken lines in FIG. 8.
  • the needle pushers 23 will thus not 'be lowered or raised merely by the tilting action, a
  • FIG. 8 shows the needle pusher 23 in a raised but not pivoted position, similar to that shown in FIG. 6.
  • the S-wise flat configuration 44 as shown in FIG. 8 is approximately circular in its overall contour and forms part of the pivot bearing.
  • the needle pusher is pressed flat and hardened from the circular zone 48 upwards as far as the foot 24.
  • the cam casing 16 is screwed onto a solid ring 49 which is integral with the frame and which is provided inside and at the top with a rectangular recess 51.
  • This recess 51 contains the device for actuating the needle pushers 23.
  • the supporting ring contains a guide channel 57 by which the lower zones of the needle pushers 23 are guided along a straight path with only very little clearance. Needless to say, this guide channel 57 in the case of circular knitting machines, is not straight but is curved in accordance with the diameter of the needle cylinder 11.
  • the guide channel 57 terminates in an obtuse angle at 58 and gives place on both sides to a salient 59, 61.
  • the salients 59 and 61 contain the magnets, to be described in due course. They continue in the form of a path-divider 62 of which the central channel 63 forms a continuation ofthe guide channel 57.
  • the central channel 63 is provided in the front with a funnel 64 which, as shown in FIG. 4, is strictly limited and sharply converges at its frone edge 66.
  • the channel 63 is of exactly the same width as the guide channel 57, except for the zones corresponding to the funnel.
  • side channels 67 and 68 are provided which lead into the salients 59 and 61 on both sides of the edge 66 of the funnel.
  • the side channels 67 and 68 take a curved course. In the drawing these are shown approximately by straight pieces of which the first leads the lower zones of the needle pushers 23 away from the channel 63 in a linear direction, while the second leads parallel to the channel 63 and the third again leads to the rear end ofthe channel 63. Needless to say, the side channels 67 and 68 could be curved to a greater extent.
  • the straight piece must nevertheless be provided, inasmuch as the foot 24 is connected with the lifting surfaces 39 and 41.
  • the walls 69 and 71 of the side channels 67 and 68 again form one common funnel for the channel 63 likewise, so that the lower zones ofthe needle pushers 23 can continue in a further guide channel 72.
  • the guide channel 57 and the channel 63 define a central plant 73 (FIG. 4). Symmetrically with this latter are two electro-magnets 74 and 76 which can be energized in accordance with the pattern and of which the yokes 77 and 78 are bent U-wise and bear windings 79 and 81. The current flowing through these windings 79 and 81 when the system is actuated takes a rectangular course and is constant current.
  • the electro-magnets 74 and 76 could also consist of bar magnets, against which a magnetizable object vested with greater force than in the case of a U-shaped magnet.
  • a U-shaped magnet offers the advantage that a greater facultye force is available, at a given distance, than in the case of a bar magnet.
  • the electro-magnets 74 and 76 are inclined between 30-80 and preferably at about 60 in relation to the direction of motion.
  • the pole piece surfaces 83 and 84 are symmetrical to the central surface 73 and perpendicular to the yoke 77 and 78.
  • the pole piece surfaces 83 and 84 commence,
  • the needle pushers 23 flying past, they will be both sufficiently close and sufficiently far away to ensure that in normal operation the needle pushers 23 will not make impact on the pole piece surfaces 83 and 84.
  • the said pole piece surfaces 83 and 84 are also parallel with the trajectory of the lower portion of the needle pushers 23.
  • all the parts, with the exception of the yokes 77, 78 and the lower zones of the needle pushers 23, are amagnetic, so that they do not weaken the magnetic field.
  • the electro-magnets 74 and 76 are at the same level, so that in the longitudinal direction only minimum space is required. If those electromagnets 74 and 76 were offset in relation to each other in the longitudinal direction, then the space required would be far greater. The same applies to the subsequent permanent magnets 86 and 87.
  • the yokes 111 can be provided with a bent part 88 preceding the pole piece surfaces 112, as shown in FIG. 9.
  • the permanent magnets 86 and 87 are provided with a winding and take the form of a U-shaped magnet.
  • Their yokes 89 and 91 are inclined between lO0-l30 and preferably at an angle of 1 10 in respect of the direction of motion 82.
  • Their permanent magnet field is symmetrical in respect of the central surface 73, so that in this position the field intensities cancel each other out.
  • Their pole pieces 92 and 93 are approximately parallel to the central surface 73 and are at a greater distance from the latter than the pole piece surfaces 83 and 84. Between these four pole piece surfaces, therefore, a magnet space is defined which is practically closed by the fins 94 and 96 pointing towards the yokes 77 and 78.
  • the side channels 67 and 68 commence immediately after the pole piece surfaces 92 and 93.
  • FIG. 9 also shows the magnetic screen 100, the plastic foil 98 likewise being shown therein.
  • This plastic foil 98 not only protects the pole piece surfaces and reduces the friction if a needle pusher happen to impact thereon.
  • the plastic foil 98 also serves to maintain a certain minimum distance between the pole piece surfaces and the needle pushers 23, so that the latter can never completely short-circuit the magnetic field.
  • the permanent magnets 97 are stepped in alignment with the longitudinal direction of the needle pushers 23 and are inclined at an angle of between 100 to 130 and preferably approximately in respect to the direction of motion 82 providing, in effect, a tin pointing towards the yoke 111.
  • Their pole piece surfaces are stepped approximately in accordance with the trajectory of the needle pushers.
  • the yoke 111 is bent U-wise and bears winding 79.
  • Yoke 111, behind its bent part 88 is inclined in relation to the direction of the needle pushers at between 30 to 80 and preferably at about 60. lts pole piece surface 83 is cut perpendicularly to it.
  • the magnet 10 bears a winding 103 and is situated immediately underneath the electro-magnets 74 and 76, as shown in FIG. 2.
  • the magnet 102 is a permanent magnet and has a fin 104 pointing towards the left.
  • the magnets 101 and 102 are situated underneath the lower end of the needle pusher 23, as clearly shown in FIG. 1, and thus do not surround it to the side.
  • the flux path of magnets 101 and 102 occurs at each magnet from one pole to the other pole.
  • the magnets 101 and 102 are immediately followed by the central channel 63 of the path-divider 62.
  • the magnets 101 and 102 can be replaced by a ferrite permanent magnet, which may be made up of individual magnet plates.
  • the apparatus mainly operates as follows: if neither of the electro-magnets 74 and 76 is actuated, the lower zone of the needle pusher 23 is not caused to change the direction of its flight through the magnet chamber 99 and will enter the central channel 63. It is additionally stabilized in this trajectory by the magnets 101 and 102. Owing to the symmetry of the arrangement the permanent magnets 86 and 87 exert no influence. The trajectory of the lower portions of the needle pushers 23 can be actively stabilized by passing a current through the winding 103 at the appropriate moment. The stabilization by means of ferrite magnets, however, is fully sufficient. In accordance with the central position of the needle pusher 23 the knitting needle 13 moves along the line 42.
  • the electro-magnet 74 or 76 is energized, the symmetry of the fields in the magnet chamber 99 is disturbed and the lower portion of the needle pushers 23 moves towards the pole piece surface 83 or 84 as the case may be. After passing through these pole piece surfaces 83 and 84 the permanent magnets 86 and 87 increase the deflection tendency, so that the lower zones of the needle pushers 23 enter one of the side channels 67 and 68. The knitting needle 13 is then actuated accordingly.
  • the deflection of the needle pushers 23 in the zone of the foot 24 covers a distance of three-tenths mm.
  • the invention operates satisfactorily when actuated with an constant current of 1 ampere, a rotation speed of l8 r.p.m., a needle cylinder diameter of 28 inches and l8-22 needles per inch.
  • the needle pushers 23 weigh about one-fourth grammes. Selection frequencies of about l kc are obtainable.
  • the knitting needle 13 only has to be controlled so as to reach one of two positions, the third possibility of the control system is dispensed with.
  • the permanent magnets 101 and 102 are then omitted, as is likewise the channel 63, and this version provides the same results as that having three channels.
  • the constant current for the electro-magnets 76 and 74 could be increased in accordance with the rotation speed of the needle cylinder 11, so that at a higher rotation speed a higher constant current would likewise be available.
  • This object could be achieved, for example, with the current ofa tacho-alternator. It is nevertheless simpler and more economical if use is made of the highest current required and if at lower speeds it is accepted middle it has practically no influence on the magnetic field and is nevertheless able to serve its purpose.
  • This narrow strip has the same function as the plastic foil 98 and prevents the needle pushers 23 from making impact on the pole piece surfaces and magnetically short circuiting the magnets.
  • the selection frequency could also be increased if the electro-magnets 74 and 76 were replaced by several such electro-magnets, each having their own windings and staggered in the direction of motion 82. Each single electro-magnet would then have to be actuated separately, largely at the speed at which the needle pushers 23 fly.
  • the successive actuation could be effected, for example, by a slide register of which the individual elements assume, at the speed at which the needle pushers 23 fly, the state required for the actuation.
  • Apparatus for the control of needle pushers for knitting tools of a knitting machine comprising:
  • needle pushers having lower magnetizable portions having substantially circular cross-sections and moveable to and fro in the grooves for moving the knitting tools
  • the needle pusher cam means and knitting tool cam means causing the needle pushers to move the knitting tools
  • the needle pushers being moveable into different positions in accordance with different positions of knitting tool
  • the needle pusher cam means having two camming surfaces for moving the needle pushers to two lateral different positions along the grooves
  • pivot bearing means for pivoting the needle pushers
  • needle pusher foot means on the needle pushers for pivotably engaging the needle pusher cam means except when the needle pushers have been pivoted into one of a plurality of pivot positions.
  • said guide channel means having a central plane taking a substantially straight course and opening into a magnet chamber which widens in the direction of flight of the needle pushers,
  • first and second electromagnet means in the magnet chamber having pole pieces close to the opening to the guide channel and on both sides thereof, positioned to magnetically select by deflecting said lower magnetizable portions of the needle pushers and pivot said needle pushers with high selection frequency without contacting said lower magnetizable portions of the needle pushers in their flight path at normal working speeds,
  • the electromagnet means being energizable in accordance with a predetermined knitting pattern, for causing the needle pushers to pivot, third and fourth magnet means following the first and second electromagnet means in the magnet chamber and producing a constant magnetic field symmetrical to the central plane of the guide channel means and positioned to magnetically influence the trajectory of said lower magnetizable needle pusher portions without contacting said lower magnetizable needle pusher portions in their flight path at normal working speeds, covering foil means which cover the pole piece surfaces of said third and fourth magnet means,
  • multi-channel path-divider means for the lower portion of the needle pushers following the magnet chamber
  • said first and second electromagnetic means and said third and fourth electromagnetic means being symmetrically located with respect to the central course of said guide channel means.
  • Apparatus in accordance with claim 1 comprising fifth magnet means in the magnet chamber beneath the lower portion of the needle pusher which produces a magnetic field symmetrical to the central plane of the guide channel means for guiding the needle pusher over a certain traject, and
  • said multi-channel path divider means having a central channel means which forms the continuation of the guide channel and a pair of side channels commencing from each side of the central channel and re-combining therewith,
  • the fifth magnet means being situated in the magnet chamber and being in alignment with the guide channel means and the central channel.
  • the fifth magnet means comprises a permanent magnet preceded by an electromagnet.
  • first and second electromagnet means comprise U- shaped magnets having pole surfaces aligned with the longitudinal direction of the needle pusher.
  • the fifth magnet means comprises a bar-shaped electromagnet and bar-shaped permanent magnet.
  • Apparatus in accordance with claim 8 in which the angle of inclination is between 30-80.
  • Apparatus in accordance with claim 12 in which the angle of inclination is approximately 14.
  • Apparatus in accordance with claim 1, comprising means for actuating the first and second electromagnet means with constant current.
  • the needle pusher comprises a zone which is of a S- wise, flat configuration and approximately circular in its overall contour, the said zone being hardened and forming part of the pivot bearing.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US301319A 1971-11-06 1972-10-27 Apparatus for control of needle pushers Expired - Lifetime US3861173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2155251A DE2155251A1 (de) 1971-11-06 1971-11-06 Vorrichtung zum aussteuern von nadelstoessern

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US3861173A true US3861173A (en) 1975-01-21

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US (1) US3861173A (de)
JP (1) JPS4891360A (de)
CH (1) CH552093A (de)
CS (1) CS161966B2 (de)
DD (1) DD99624A5 (de)
DE (1) DE2155251A1 (de)
ES (1) ES408140A1 (de)
FR (1) FR2160023A5 (de)
GB (1) GB1404608A (de)
IT (1) IT970222B (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948062A (en) * 1973-08-15 1976-04-06 Precision Fukuhara Works, Inc. Electronic needle selecting means for circular knitting machines
US3987646A (en) * 1972-01-10 1976-10-26 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Magnetic actuator construction for a circular knitting machine
US4154066A (en) * 1977-10-06 1979-05-15 Empisal Knitmaster Luxembourg S.A. Needle selection unit for a hand knitter
US4171628A (en) * 1975-05-22 1979-10-23 C. Terrot Soehne Gmbh & Co. Magnetic control system for circular knitting machines
US4241680A (en) * 1977-03-31 1980-12-30 Newroyd Limited Device for stopping a needle at a predetermined position
US4320635A (en) * 1978-06-05 1982-03-23 Edouard Dubied & Cie. Societe Anonyme Electromagnetic selection device for needles of a knitting machine
US4608839A (en) * 1982-07-14 1986-09-02 Tibbals Jr Edward C Circular weft knitting machines
US4739636A (en) * 1984-08-06 1988-04-26 Cesare Colosio S.R.L. Circular knitting machine
US4799366A (en) * 1987-08-04 1989-01-24 Orizio Paolo S.P.A. Knitting or hosiery machine with electronic-controlled, electromechanically actuated selection of the needles
US5018556A (en) * 1988-04-01 1991-05-28 Murata Kikai Kabushiki Kaisha Dobby loom with a magnetically operated hook selector
US20040221620A1 (en) * 2003-05-09 2004-11-11 Rolf Willmer Knitting machine, in particular circular knitting machine, and control jack suitable for same

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119850A (en) * 1974-08-08 1976-02-17 Nagata Seiki Kk Maruamikiniokeru garadashihohoto sonosochi
DE3232471A1 (de) * 1981-09-08 1983-03-24 Edouard Dubied & Cie. S.A., 2108 Couvet, Neuchâtel Strickmaschine mit elektromagnetischer wahl der nadeln
GB2152956B (en) * 1982-07-14 1988-08-10 Annedeen Hosiery Mill Inc Circular weft knitting machine and method
DE3701743C2 (de) * 1987-01-22 1995-03-23 Terrot Strickmaschinen Gmbh Strickmaschine
JPS63211348A (ja) * 1987-02-27 1988-09-02 株式会社　福原精機製作所 丸編機の選針装置
JPS63264955A (ja) * 1987-04-20 1988-11-01 オークマ株式会社 編機の選針装置
DE4445639A1 (de) * 1994-12-21 1996-06-27 Horst Paepke Nadelauswahlvorrichtung

Citations (6)

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Publication number Priority date Publication date Assignee Title
US3262285A (en) * 1962-07-11 1966-07-26 Beguin Rene Electromagnetic needle selection mechanism
US3283541A (en) * 1963-02-14 1966-11-08 Dubied & Cie Sa E Method and device for the individual control of selecting members
US3365916A (en) * 1965-03-02 1968-01-30 Morat Kg Franz Selector magnetic arrangement for knitting machines
US3518845A (en) * 1966-11-14 1970-07-07 Dubied & Cie Sa E Selecting device for individual selection of the knitting tools in very fine gauge knitting machines
US3629755A (en) * 1970-09-08 1971-12-21 Data Printer Corp Hammer actuator construction for high-speed printers
US3771328A (en) * 1972-01-03 1973-11-13 A Schindele Jack-controlling means for the needles of a circular knitting machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262285A (en) * 1962-07-11 1966-07-26 Beguin Rene Electromagnetic needle selection mechanism
US3283541A (en) * 1963-02-14 1966-11-08 Dubied & Cie Sa E Method and device for the individual control of selecting members
US3365916A (en) * 1965-03-02 1968-01-30 Morat Kg Franz Selector magnetic arrangement for knitting machines
US3518845A (en) * 1966-11-14 1970-07-07 Dubied & Cie Sa E Selecting device for individual selection of the knitting tools in very fine gauge knitting machines
US3629755A (en) * 1970-09-08 1971-12-21 Data Printer Corp Hammer actuator construction for high-speed printers
US3771328A (en) * 1972-01-03 1973-11-13 A Schindele Jack-controlling means for the needles of a circular knitting machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987646A (en) * 1972-01-10 1976-10-26 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Magnetic actuator construction for a circular knitting machine
US3948062A (en) * 1973-08-15 1976-04-06 Precision Fukuhara Works, Inc. Electronic needle selecting means for circular knitting machines
US4171628A (en) * 1975-05-22 1979-10-23 C. Terrot Soehne Gmbh & Co. Magnetic control system for circular knitting machines
US4241680A (en) * 1977-03-31 1980-12-30 Newroyd Limited Device for stopping a needle at a predetermined position
US4154066A (en) * 1977-10-06 1979-05-15 Empisal Knitmaster Luxembourg S.A. Needle selection unit for a hand knitter
US4320635A (en) * 1978-06-05 1982-03-23 Edouard Dubied & Cie. Societe Anonyme Electromagnetic selection device for needles of a knitting machine
US4608839A (en) * 1982-07-14 1986-09-02 Tibbals Jr Edward C Circular weft knitting machines
US4739636A (en) * 1984-08-06 1988-04-26 Cesare Colosio S.R.L. Circular knitting machine
US4799366A (en) * 1987-08-04 1989-01-24 Orizio Paolo S.P.A. Knitting or hosiery machine with electronic-controlled, electromechanically actuated selection of the needles
US5018556A (en) * 1988-04-01 1991-05-28 Murata Kikai Kabushiki Kaisha Dobby loom with a magnetically operated hook selector
US20040221620A1 (en) * 2003-05-09 2004-11-11 Rolf Willmer Knitting machine, in particular circular knitting machine, and control jack suitable for same
US6962065B2 (en) * 2003-05-09 2005-11-08 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Knitting machine, in particular circular knitting machine, and control jack suitable for same

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Publication number Publication date
IT970222B (it) 1974-04-10
CS161966B2 (de) 1975-06-10
DD99624A5 (de) 1973-08-12
ES408140A1 (es) 1976-01-01
FR2160023A5 (de) 1973-06-22
GB1404608A (en) 1975-09-03
DE2155251A1 (de) 1973-05-10
JPS4891360A (de) 1973-11-28
CH552093A (de) 1974-07-31

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